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Finding the Fourth Proportional to 19,011.95, 28,498.77 and 7,924.77

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Solution

The fourth proportional to 19,011.95, 28,498.77 and 7,924.77 is: 11,879.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.95 : 28,498.77 = 7,924.77 : x
  2. Step 2: Convert to fraction form
    19,011.95/28,498.77 = 7,924.77/x
  3. Step 3: Cross multiply
    19,011.95x = 28,498.77 × 7,924.77
  4. Step 4: Simplify right side
    19,011.95x = 225,846,197.53
  5. Step 5: Solve for x
    x = 225,846,197.53/19,011.95
  6. Step 6: Final answer
    x = 11,879.17

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.